Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design
This paper presents an experimental and numerical investigation into the flexural–torsional buckling behaviour and resistance of pin-ended press-braked S690 high strength steel angle section columns. An experimental programme was firstly conducted and included initial geometric imperfection measurem...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/170365 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-170365 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1703652023-09-11T00:48:57Z Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design Zhang, Lulu Su, Andi Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Angle Section Columns Design Codes This paper presents an experimental and numerical investigation into the flexural–torsional buckling behaviour and resistance of pin-ended press-braked S690 high strength steel angle section columns. An experimental programme was firstly conducted and included initial geometric imperfection measurements and twelve pin-ended column tests. The column test results, including the failure loads and deformations at the failure loads, load–mid-height torsional rotation curves and failure modes, were fully reported and discussed. The experimental programme was accompanied by a numerical modelling programme, where finite element models were developed and validated against the test results and then employed to perform parametric studies to expand the test data pool over a wider range of cross-section dimensions and member lengths. The obtained test and numerical data were then used to assess the relevant codified design rules, as provided in the European code, North American specification and Australian/New Zealand standard, and a DSM-based design approach. The assessment results revealed that all the codified design rules lead to excessively conservative and scattered resistance predictions for pin-ended press-braked S690 high strength steel angle section columns susceptible to flexural–torsional buckling, while the DSM-based design approach yields substantially improved resistance predictions, owing to the rational consideration of the length-dependent characteristic of flexural–torsional buckling and the interaction of flexural–torsional buckling with minor-axis flexural buckling. Ministry of Education (MOE) The research work presented in this paper receives financial sup-ports from the Regency Steel Asia Endowment Fund (Award Number: 03INS001251C120) and Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Award Number: RG142/20). 2023-09-11T00:48:57Z 2023-09-11T00:48:57Z 2023 Journal Article Zhang, L., Su, A. & Zhao, O. (2023). Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design. Thin-Walled Structures, 182(B), 110217-. https://dx.doi.org/10.1016/j.tws.2022.110217 0263-8231 https://hdl.handle.net/10356/170365 10.1016/j.tws.2022.110217 2-s2.0-85141228837 B 182 110217 en RG142/20 Thin-Walled Structures © 2022 Elsevier Ltd. All rights reserved. |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Engineering::Civil engineering Angle Section Columns Design Codes |
spellingShingle |
Engineering::Civil engineering Angle Section Columns Design Codes Zhang, Lulu Su, Andi Zhao, Ou Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
description |
This paper presents an experimental and numerical investigation into the flexural–torsional buckling behaviour and resistance of pin-ended press-braked S690 high strength steel angle section columns. An experimental programme was firstly conducted and included initial geometric imperfection measurements and twelve pin-ended column tests. The column test results, including the failure loads and deformations at the failure loads, load–mid-height torsional rotation curves and failure modes, were fully reported and discussed. The experimental programme was accompanied by a numerical modelling programme, where finite element models were developed and validated against the test results and then employed to perform parametric studies to expand the test data pool over a wider range of cross-section dimensions and member lengths. The obtained test and numerical data were then used to assess the relevant codified design rules, as provided in the European code, North American specification and Australian/New Zealand standard, and a DSM-based design approach. The assessment results revealed that all the codified design rules lead to excessively conservative and scattered resistance predictions for pin-ended press-braked S690 high strength steel angle section columns susceptible to flexural–torsional buckling, while the DSM-based design approach yields substantially improved resistance predictions, owing to the rational consideration of the length-dependent characteristic of flexural–torsional buckling and the interaction of flexural–torsional buckling with minor-axis flexural buckling. |
author2 |
School of Civil and Environmental Engineering |
author_facet |
School of Civil and Environmental Engineering Zhang, Lulu Su, Andi Zhao, Ou |
format |
Article |
author |
Zhang, Lulu Su, Andi Zhao, Ou |
author_sort |
Zhang, Lulu |
title |
Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
title_short |
Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
title_full |
Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
title_fullStr |
Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
title_full_unstemmed |
Flexural–torsional buckling of pin-ended press-braked S690 high strength steel angle section columns: testing, modelling and design |
title_sort |
flexural–torsional buckling of pin-ended press-braked s690 high strength steel angle section columns: testing, modelling and design |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/170365 |
_version_ |
1779156577700282368 |